Failed Conditions
Push — master ( 93b1b5...fcd324 )
by Rafael
04:07
created

resolveNextSequenceIdForGivenLimit()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 17
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 17
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 11
nc 2
nop 1
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<?php
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namespace ApacheSolrForTypo3\Solr\Domain\Search\LastSearches;
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/***************************************************************
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 *  Copyright notice
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 *
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 *  (c) 2010-2017 dkd Internet Service GmbH <[email protected]>
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 *  All rights reserved
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 *
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 *  This script is part of the TYPO3 project. The TYPO3 project is
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 *  free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *
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 *  The GNU General Public License can be found at
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 *  http://www.gnu.org/copyleft/gpl.html.
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 *
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 *  This script is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  This copyright notice MUST APPEAR in all copies of the script!
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 ***************************************************************/
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use ApacheSolrForTypo3\Solr\System\Records\AbstractRepository;
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class LastSearchesRepository extends AbstractRepository
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{
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    /**
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     * @var string
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     */
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    protected $table = 'tx_solr_last_searches';
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    /**
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     * @var \TYPO3\CMS\Core\Database\DatabaseConnection
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     */
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    protected $database;
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    /**
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     * Finds the last searched keywords from the database
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     *
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     * @param int $limit
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     * @return array An array containing the last searches of the current user
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     */
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    public function findAllKeywords($limit = 10) : array
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    {
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        $lastSearchesResultSet = $this->getLastSearchesResultSet($limit);
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        if (empty($lastSearchesResultSet)) {
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            return [];
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        }
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        $lastSearches = [];
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        foreach ($lastSearchesResultSet as $row) {
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            $lastSearches[] = html_entity_decode($row['keywords'], ENT_QUOTES, 'UTF-8');
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        }
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        return $lastSearches;
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    }
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    /**
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     * Returns all last searches
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     *
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     * @param $limit
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     * @return array
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     */
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    protected function getLastSearchesResultSet($limit) : array
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    {
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        $queryBuilder = $this->getQueryBuilder();
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        return $queryBuilder
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            ->select('keywords')
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            ->from($this->table)
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            // There is no support for DISTINCT, a ->groupBy() has to be used instead.
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            ->groupBy('keywords')
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            ->orderBy('tstamp', 'DESC')
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            ->setMaxResults($limit)->execute()->fetchAll();
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    }
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    /**
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     * Adds keywords to last searches or updates the oldest row by given limit.
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     *
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     * @param string $lastSearchesKeywords
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     * @param int $lastSearchesLimit
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     * @return void
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     */
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    public function add(string $lastSearchesKeywords, int $lastSearchesLimit)
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    {
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        $nextSequenceId = $this->resolveNextSequenceIdForGivenLimit($lastSearchesLimit);
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        $rowsCount = $this->count();
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        if ($nextSequenceId < $rowsCount) {
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            $this->update([
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                'sequence_id' => $nextSequenceId,
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                'keywords' => $lastSearchesKeywords
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            ]);
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            return;
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        }
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        $queryBuilder = $this->getQueryBuilder();
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        $queryBuilder
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            ->insert($this->table)
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            ->values([
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                'sequence_id' => $nextSequenceId,
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                'keywords' => $lastSearchesKeywords,
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                'tstamp' => time()
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            ])
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            ->execute();
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    }
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    /**
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     * Resolves next sequence id by given last searches limit.
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     *
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     * @param int $lastSearchesLimit
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     * @return int
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     */
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    protected function resolveNextSequenceIdForGivenLimit(int $lastSearchesLimit) : int
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    {
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        $nextSequenceId = 0;
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        $queryBuilder = $this->getQueryBuilder();
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        $result = $queryBuilder->select('sequence_id')
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            ->from($this->table)
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            ->orderBy('tstamp', 'DESC')
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            ->setMaxResults(1)
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            ->execute()->fetch();
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        if (!empty($result)) {
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            $nextSequenceId = ($result['sequence_id'] + 1) % $lastSearchesLimit;
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        }
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        return $nextSequenceId;
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    }
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    /**
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     * Updates last searches row by using sequence_id from given $lastSearchesRow array
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     *
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     * @param array $lastSearchesRow
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     * @return void
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     * @throws \InvalidArgumentException
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     */
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    protected function update(array $lastSearchesRow)
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    {
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        $queryBuilder = $this->getQueryBuilder();
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        $affectedRows = $queryBuilder
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            ->update($this->table)
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            ->where(
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                $queryBuilder->expr()->eq('sequence_id', $queryBuilder->createNamedParameter($lastSearchesRow['sequence_id']))
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            )
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            ->set('tstamp', time())
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            ->set('keywords', $lastSearchesRow['keywords'])
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            ->execute();
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        if ($affectedRows < 1) {
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            throw new \InvalidArgumentException(vsprintf('By trying to update last searches row with values "%s" nothing was updated, make sure the given "sequence_id" exists in database.', [\json_encode($lastSearchesRow)]), 1502717923);
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        }
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    }
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}
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